package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.Category;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
public class UserServiceImpl implements UserService {
	//微信服务接口地址
	public static final String WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";

	@Autowired
	private UserMapper userMapper;

	@Autowired
	private WeChatProperties weChatProperties;

	@Override
	public User wxLogin(UserLoginDTO userLoginDTO) {

		String openid = getOpenid(userLoginDTO.getCode());

		if (openid == null) {
			throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
		}

		User user = userMapper.wxLogin(openid);

		if (user == null) {
			user = User.builder().openid(openid).build();
			user.setCreateTime(LocalDateTime.now());
			userMapper.insert(user);
		}
		return user;
	}



	private String getOpenid(String code) {
		Map<String, String> map = new HashMap<>();
		map.put("appid", weChatProperties.getAppid());
		map.put("secret", weChatProperties.getSecret());
		map.put("js_code", code);
		map.put("grant_type", "authorization_code");
		String json = HttpClientUtil.doGet(WX_LOGIN, map);
		JSONObject jsonObject = JSON.parseObject(json);
		return jsonObject.getString("openid");
	}
}
